I want to change the wheels out on my 66' 300 and I'm quickly learning that I have to research EVERYTHING before making any changes. I recently read about the left hand right hand thread deal ( good thing before i put the impact on it) . I was wondering if any changes needed to be made if I wanted to go from a 14" to a 15" wheel. Whats the bolt pattern on these cars and what kind of backspacing do the wheels have? I found the information on the attached screen shot but not sure how accurate it is. I'd like to find a nice chrome 5 spoke wheel, along the lines of a Cragar SS or similar. I appreciate everyone's ones help, im learning alot from this forum!